I've been waiting for a cybersecurity incident to move markets since forever. It seems consumers and investors don't really care.
https://news.ycombinator.com/item?id=38932228
According to one of the comments: "The price of BTC initially jumped 3% on the hacked tweet. That's $25bn+ of market cap."
From a purely pragmatic perspective, Tesla's that occasionally and irregularly crash are a way better alternative than terrible human drivers.
It's lifting secret keys that allow criminals to open any Tesla 'till an OTA update, or callback has been rolled out. For days exposing your Tesla+luggage to theft. Or just breaking stuff: imagine the flack of every tesla driver suddenly losing access to navigation or entertainment for weeks. Or camera access: imagine the outrage if hackers can record and publish anything done and said inside and around Teslas in the last months?
The good(?) news is that e.g. WannaCry took out large, "boring" companies, like Maersk, or MSD. These companies typically have a low Alpha, low volatility, and people invest in them for long term: decades rather than weeks. Whereas with e.g. Tesla, every fart that Elon makes has an effect on the stocks.